Considering the alveolar capillary membrane the diffusion co

Considering the alveolar capillary membrane, the diffusion constant in Fick’s Law is much greater for CO2 as compared to O2 because:

a) CO2 has a much higher partial pressure difference than O2

b) O2 has a much higher solubility in blood than CO2

c) CO2 has a much higher molecular weight than O2

d) CO2 has a much higher solubility in blood than O2

Solution

Answer : a

CO2 has a much higher partial pressure difference than O2 in alveolaa capillaries.so the diffusion constant in Fick\'s law is much grater for CO2 as compared to O2.